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Accessible Bathroom Ventilation System Through Wall

A low Voltage back-to-back wall mounted extract fan, installed through exterior wall with cowl. Suitable for installation inside shower cubicles (zone 1 & 2 electrical).

Key Features
  • Simple and Effective: The most straightforward path is often the best one
  • Back-to-back installations allow for extra short duct runs with no fuss and easy installation
  • Safe Operation: Low voltage fans allow for installation in zones that would not accept a standard surface mount fan
  • Exceeds Healthy Homes requirements for bathrooms and laundries
Scope of Use
  • Single room, intermittent extraction

Ideal for:

  • Accessible bathrooms or other wet rooms
  • Suitable for zone 1&2 installation


  • Wall mounted
  • Diameter: 150mm 
  • Minimum clearance: Suitable for 90mm walls 
  • Duct run: Back-to-back install
  • Fire protection available that is compliant to AS/NZS 15304.4:2014
Limitations on Use
  • All fans to be connected to an isolating switch as per AS/NZS 3000:2018
  • The fans remote mounted transformer should be installed beyond Zone 2
  • Fan should be installed with moderate slope (<5°) to outside to allow condensation to run out
Statement of Building Code Compliance

Meets the following provisions of the NZBC:

  • B2: Durability
  • E2: External Moisture
  • G4: Ventilation

Healthy Homes:

  • Extraction air volume exceeds 25l/s for bathrooms, and/or 40l/s for laundries


  • Fire protection available that is compliant to AS/NZS 15304.4:2014
Other Performance Attributes
  • Air Flow: >70l/s
  • Noise: 40dB(A)
  • Power: 20W 


  • 5 year fan motor warranty
  • 10 years for materials and workmanship

Terms and conditions apply.

HTBKTWLV: Accessible Bathroom Kit Through Wall

Hometech, the ventilation specialists, have been helping Kiwis for over 30 years to create healthier homes.

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